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RFC 6384: An FTP Application Layer Gateway (ALG) for IPv6-to-IPv4 Translation

In plain English — editorial summary, not part of the RFC

The File Transfer Protocol (FTP) has a very long history, and despite the fact that today other options exist to perform file transfers, FTP is still in common use. As such, in situations where some client computers only have IPv6 connectivity while many servers are still IPv4-only and IPv6-to-IPv4 translators are used to bridge that gap, it is important that FTP is made to work through these translators to the best possible extent. FTP has an active and a passive mode, both as original commands that are IPv4-specific and as extended, IP version agnostic commands. The only FTP mode that works without changes through an IPv6-to-IPv4 translator is extended passive. However, many existing FTP servers do not support this mode, and some clients do not ask for it. This document specifies a middlebox that may solve this mismatch. [STANDARDS-TRACK]

Document record

Document ID
RFC6384
Published
October 2011
Authors
I. van Beijnum
Status
PROPOSED STANDARD
Stream
IETF
Area
tsv
Pages
16
Also known as
—

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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canonical URL: /rfc/6384-an-ftp-application-layer-gateway-alg-for-ipv6-to-ipv4-translation